Yume Minami is a 15-year-old student at Fujiyoki High School, recognized by her light brown hair with pink shades, green eyes, and height of 160 cm. She typically wears a tan sweater featuring red and white edges layered over a white dress shirt, paired with a navy blue jacket adorned with yellow buttons, a dark grey skirt, black stockings, and brown shoes. Her childhood was irrevocably altered by the death of her older sister, Kano Minami, in an accident at a floodgate during Yume's elementary years. This loss inflicted deep emotional wounds, resulting in undiagnosed post-traumatic stress disorder. Yume grew emotionally distant from most peers, maintaining a close bond solely with her best friend, Mei. She adopted a pattern of making promises with boys she never intended to keep, a coping mechanism rooted in unresolved grief and guilt over her strained relationship with Kano prior to the accident. The sisters' names originate from the classical Chinese proverb "Nanka no Yume" (Governor of Nanke's Dream), reflecting life's transient, dream-like quality. Yume's path shifts dramatically when, caught in a kaiju attack, she encounters Gauma and Yomogi Asanaka. Unexpectedly recruited as a co-pilot for the giant robot Dynazenon, she operates the Dynawing component. Initially hesitant, she slowly forges connections with the team. Her emotional core revolves around confronting Kano's death, a struggle intensified by rumors suggesting Kano died by suicide due to bullying or a failed relationship with Futaba Senda. These rumors plunge Yume into deeper depression until the kaiju Garnix transports her back to the day of Kano's accident. With Yomogi's crucial intervention, she prevents Kano's fall and uncovers the truth: Kano's death was accidental, not intentional. In their final conversation, Kano confesses she envied Yume's ability to connect with others, finally granting Yume closure and enabling her to reconcile her long-held guilt. Emerging from this pivotal event, Yume's demeanor softens markedly. Genuine smiles return, she repairs the separated pieces of Kano's ankh pendant (broken during her turmoil), and she abandons her habit of breaking promises. In the final battle against Gagula, she trips over rubble while reaching for Dynawing, sustaining an S-shaped scar on her leg. This scar, shared among the Dynazenon pilots as a symbol of their collective trauma and bond, becomes a permanent mark she resolves to keep. Three months post-battle, her participation in a school festival dressed as a princess signals her reintegration into social life and emotional healing. Her relationship with Yomogi deepens, culminating in his confession of feelings; however, their romantic status remains unresolved after Sizumu's interruption prevents her response. As the Dynawing pilot, Yume demonstrates proficiency under Gauma's command, actively engaging in combination sequences and attacks such as the "Something Beam." Her unresolved trauma initially hinders Dynazenon's cohesion and performance in battle, but her subsequent psychological healing significantly strengthens the team's collective effectiveness.